title: A new human B-cell non-Hodgkin's lymphoma cell line (Karpas 422) exhibiting both t (14;18) and t(4;11) chromosomal translocations.
abstract: A unique B-cell non-Hodgkin's lymphoma (NHL) cell line (Karpas 422), bearing both t(14;18) and t(4;11) chromosomal translocations as well as several other chromosomal abnormalities, has been established from the pleural effusion of a patient with chemotherapy-resistant NHL. This cell line has the same karyotypic features as malignant cells from the patient. The major cell clone is characterized chromosomally by 46,XX t(2;10)(p23;q22.1), t(4;11)(q21.3; q23.1), t(14;18)(q32.1;q21.3), t(4;16)(q21.3;p13.1). Both phenotypically and genotypically, the cell line has features of a mature B-cell neoplasm with no evidence for commitment to other lineages. Rearrangements of the C-ETS-1 oncogene and N-CAM-1 and CD3 genes that map to 11q23 were not detected by conventional Southern analysis. BCL-2 was rearranged within the major breakpoint cluster. The K422 cell line has a unique karyotype; this is the first occasion that the t(4;11) translocation has been described in a t(14;18) lymphoma. The cell line will be of value in determining the molecular nature of the t(4;11) translocation.
authors.affiliation: Department of Haematology, University of Cambridge, UK.
authors.forename: M J
authors.initials: MJ
authors.lastname: Dyer
authors.forename: P
authors.initials: P
authors.lastname: Fischer
authors.forename: E
authors.initials: E
authors.lastname: Nacheva
authors.forename: W
authors.initials: W
authors.lastname: Labastide
authors.forename: A
authors.initials: A
authors.lastname: Karpas
mesh_terms: D015703:Antigens, CD / Q000032:analysis; D000954:Antigens, Surface / Q000032:analysis; D001402:B-Lymphocytes / Q000473:pathology; D002871:Chromosome Banding; D002880:Chromosomes, Human, Pair 11; D002883:Chromosomes, Human, Pair 14; D002887:Chromosomes, Human, Pair 18; D002894:Chromosomes, Human, Pair 4; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D011947:Receptors, Antigen, B-Cell / Q000032:analysis; D014178:Translocation, Genetic; D014407:Tumor Cells, Cultured / Q000276:immunology / Q000473:pathology*
chemical_list: D015703:Antigens, CD; D000954:Antigens, Surface; D011947:Receptors, Antigen, B-Cell